growers for them about 6 to weeks you will see when they are chomping everything down and need more food so shift them over then, i feed growers to 20 weeks and i mix a corn with it from 14 .grit not shell, oestra ,extra calcium or whatever they call it in your neck of the woods should not be fed until 14 weeks and just make it available water.water .water should be avaialble at all times and
remember just like your kids some birds mature internally a little quicker .
what ever advice i offer may contradict others but i do this myself for myself and my birds and i am passing on only this . i suggest you read other information avaialble and take notice from that as well and draw your own conclusions i wont say what they do is wrong unless its blatantly blooming stupid and likely to harm the birds or the owner.
i quote from a university trained keeper of birds who had more degrees than i have freckles according to her ,on the subject of putting hay under a broody bird ready for the chicks to be born she commanded that all chicks should not be reared or hatched on hay as they would have splayed legs ..she berated me for suggesting this and that i was talking tripe and giving the wrong advice and carried on berating me
she gave me the i am qualified blah blah blah .. i just pointed out that no matter how many blooming degrees she had .nature was still doing it the old fashioned way and birds lay eggs on dry grass and they sit and incubate the chicks on dry grass and they nurture the chicks on dry grass in grass fields etc .i dont see any chicks with splayed legs wobbling around the countryside ,, did she ? trust in what nature would do is my responce to most questions ,no matter what a college teaches you its experiance that counts formost .hope that helps